Finding the Fourth Proportional to 157,915.17, 217,919.34 and 86,295.62
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Solution
The fourth proportional to 157,915.17, 217,919.34 and 86,295.62 is: 119,085.99
Step by Step Solution
- Step 1: Write the proportion equation
157,915.17 : 217,919.34 = 86,295.62 : x - Step 2: Convert to fraction form
157,915.17/217,919.34 = 86,295.62/x - Step 3: Cross multiply
157,915.17x = 217,919.34 × 86,295.62 - Step 4: Simplify right side
157,915.17x = 18,805,485,100.09 - Step 5: Solve for x
x = 18,805,485,100.09/157,915.17 - Step 6: Final answer
x = 119,085.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.